Mercurial > hg > truffle
view test/runtime/6626217/Loader2.java @ 6253:db823a892a55
7182260: G1: Fine grain RSet freeing bottleneck
Summary: Chain the fine grain PerRegionTables in an individual RSet together and free them in bulk using a single operation.
Reviewed-by: johnc, brutisso
Contributed-by: Thomas Schatzl <thomas.schatzl@jku.at>
author | johnc |
---|---|
date | Tue, 17 Jul 2012 12:24:05 -0700 |
parents | 495caa35b1b5 |
children |
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import java.io.ByteArrayInputStream; import java.io.FileInputStream; public class Loader2 extends ClassLoader { int _recur; public void print( String msg ) { for( int i=0; i<_recur; i++ ) System.out.print(" "); System.out.println(">>Loader2>> "+msg); } protected Class findClass2(String name) throws ClassNotFoundException { print("Fetching the implementation of "+name); int old = _recur; try { FileInputStream fi = new FileInputStream(name+".impl2"); byte result[] = new byte[fi.available()]; fi.read(result); print("DefineClass1 on "+name); _recur++; Class clazz = defineClass(name, result, 0, result.length); _recur = old; print("Returning newly loaded class."); return clazz; } catch (Exception e) { _recur = old; print("Not found on disk."); // If we caught an exception, either the class was not found or // it was unreadable by our process. return null; //throw new ClassNotFoundException(e.toString()); } } protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException { // Attempt a disk load first Class c = findClass2(name); if( c == null ) { // check if the class has already been loaded print("Checking for prior loaded class "+name); c = findLoadedClass(name); print("Letting super-loader load "+name); int old = _recur; _recur++; c = super.loadClass(name, false); _recur=old; } if (resolve) { print("Resolving class "+name); resolveClass(c); } print("Returning clazz "+c.getClassLoader()+":"+name); return c; } }